96 lines
1.8 KiB
Go
96 lines
1.8 KiB
Go
package formatprocessor
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import (
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"fmt"
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"time"
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"github.com/aler9/gortsplib/v2/pkg/format"
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"github.com/aler9/gortsplib/v2/pkg/formatdecenc/rtpsimpleaudio"
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"github.com/pion/rtp"
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)
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// UnitOpus is a Opus data unit.
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type UnitOpus struct {
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RTPPackets []*rtp.Packet
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NTP time.Time
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PTS time.Duration
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Frame []byte
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}
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// GetRTPPackets implements Unit.
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func (d *UnitOpus) GetRTPPackets() []*rtp.Packet {
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return d.RTPPackets
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}
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// GetNTP implements Unit.
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func (d *UnitOpus) GetNTP() time.Time {
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return d.NTP
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}
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type formatProcessorOpus struct {
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udpMaxPayloadSize int
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format *format.Opus
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encoder *rtpsimpleaudio.Encoder
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decoder *rtpsimpleaudio.Decoder
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}
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func newOpus(
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udpMaxPayloadSize int,
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forma *format.Opus,
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allocateEncoder bool,
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) (*formatProcessorOpus, error) {
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t := &formatProcessorOpus{
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udpMaxPayloadSize: udpMaxPayloadSize,
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format: forma,
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}
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if allocateEncoder {
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t.encoder = forma.CreateEncoder()
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}
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return t, nil
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}
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func (t *formatProcessorOpus) Process(unit Unit, hasNonRTSPReaders bool) error { //nolint:dupl
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tunit := unit.(*UnitOpus)
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if tunit.RTPPackets != nil {
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pkt := tunit.RTPPackets[0]
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// remove padding
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pkt.Header.Padding = false
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pkt.PaddingSize = 0
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if pkt.MarshalSize() > t.udpMaxPayloadSize {
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return fmt.Errorf("payload size (%d) is greater than maximum allowed (%d)",
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pkt.MarshalSize(), t.udpMaxPayloadSize)
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}
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// decode from RTP
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if hasNonRTSPReaders {
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if t.decoder == nil {
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t.decoder = t.format.CreateDecoder()
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}
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frame, pts, err := t.decoder.Decode(pkt)
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if err != nil {
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return err
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}
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tunit.Frame = frame
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tunit.PTS = pts
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}
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// route packet as is
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return nil
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}
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pkt, err := t.encoder.Encode(tunit.Frame, tunit.PTS)
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if err != nil {
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return err
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}
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tunit.RTPPackets = []*rtp.Packet{pkt}
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return nil
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}
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